Color

#5777ea

#5777ea
hex#5777ea
rgbrgb(87, 119, 234)
hslhsl(227, 78%, 63%)
oklchoklch(0.605 0.177 268.9)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.2116

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#eaca57

#57c1ea · #8157ea

#ea5777 · #77ea57

Split-complementary

Open in tool →

#ea8157 · #c1ea57

#ea57c1 · #eaca57 · #57ea81

Contrast

#5777ea as textRatioAAAA largeAAAFix
Aaon white
4.01:1failpassfail
  • AA: use #496ce9 as the text (4.56:1)
  • AAA: use #1b46de as the text (7.05:1)
  • AA: or shift the background to #141414 (4.59:1)
Aaon black
5.23:1passpassfail
  • AAA: use #7791ee as the text (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5777ea as the background.

Brands using this color

Fonts for this mood

#5777ea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5777ea
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #5777ea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5777ea-9ca0c4-df7a4e-221f2d-e9eff1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md